> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.simplyprint.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Printer requires user input

### SimplyPrint says my printer requires "user input" - what is this?
Some printers have firmware where it, in certain situations, can lock up and block all incoming commands - meaning SimplyPrint won't be able to tell the printer what to do.
There is a super simple fix though; just go to your printer, and press the screen-button. In all cases we know of, that's all that's needed.

#### Known cases where this happens
**- Prusa printers**
* On filament runout _(triggered by filament sensor)_
* On insert of filament
* On heater timeout _(when cooldown is automatically triggered after X minutes)_

![](https://storage.crisp.chat/users/helpdesk/website/ff22a914001c1000/img2021113014185801_1deknoo.jpg)